Stopping device.



W. BARTHDLOMEW & D. J.. PHILLIPS. sToPPING DEVICE.

APPLIUATION FILED vAUG. 9, 1909. 952,407.

3 SHEETS-SHEET 3.

Patented Mar.1`5,.191o.

srarns WILLIAM BARTI-IOLOMEW AND DAVID J'. PHILLIPS, OF CHICAGO, ILLINOS, SSGNORS i'ran orties..

TO TROY LAUNDRY 'MACHINERY COMPANY, OF CHICAGO, ILLINOIS, A. CORPORA- TION OF NEW YORK.

Specification of To all whom it may concern. I

Be it known that we, WILLIAM Ban'riiono- Miiw and D'Avin JQPHILLIrs, citizens of vthe United States, residing at Chicago, county of Cook, State of Illinois, have invented certainnew Vand useful Improvement-s in Stopping Devices; of which the-following is a specification, `reference being had therein 'to the accompanying drawing.

This invention relates to a stopping dev ice for powervdriven machinery and par ticularly to a construction controlled by the.

movements of an operator in approaching a dangerous moving portion of a machine.

The invention has for an object to provide movable safety devices nornially held position to protect the opera'tor and when leased in. a movementv thereof to permit an automatic shifting of a belt to cnt oft' the power from a. machine. i l

Other and further objects and advantages of the invention will be'herein'after set forth and the novel features thereof defined by the appended claims. In the drawings-Figure 1 is a front elevation of the invention applied to the frame of a laundry mangle; Fig. 2 is a side .elevaforni of the invention.-

`is av to t3 is a detail elevation 'of the belt shifter;

tion thereof with the supporting bracket at the right in section; Fig. 3 is a vertical' section through thelatehl mechanism; Fig.

eis a section on line we of Fig. 3; Fig. 5

p plan of thelatch mechanism; Fig.

and Fig. Z is a side elevation of a modified Like numerals refer to Vlike 'parts in the severaltigures of the drawings.

rfhe invention is adapted, for application to various types of machines having mov-- able partsby which an operator is liable to be 'injured when coming in contact there-l with. For the purpose of illustration it is 'hereinshown in connection withJ laundry mangle in which the numerall 10 designates the frame of the machine `upon which the Letters Patent. v Application ined August 9, 190s.

Patented Mar.

15, 1910. se'riai'ivo. 512,101.`

movable parts are mounted such as the rolls 11 with which a feeding apron 12 copeiaites,

thisv apron being4 extended from a feed bracket 13 of usual construction. Adjacentto the feed apron the guard board leissuspended by means of the hangers 15 `pivoted upon the shaft 1,6 which 'may be mounted in any desired support. The free edge 17 of this board has .extended -fioin the end .thereof an operating' rod 18 provided with the machine and secured to a rock 'shaft 27 which is provided at its extended end with a crank arin 28A from which al connector 29 extends tothe lever 24. The arm 9.0 may beprovided with a weight BO or desired tension meansto restore 'it 'to its initial position. y

The parts so far described are adapted to coperatie with any desired'power controlling device, and/in the modified form of invention shown in Fig' are vconnected with an automatic switch 31 by which power1 to an electric driving lmotor may be cutl eff. In this form .the switch blade 3Q is normally held in dotted line position by means of the tension spring 33and4is retained in contact with the switch block 3ft by means of a latch lever-35 pivoted at 3G and engaging the swith blade at its end 37. The outer endBS of this lever is pivoted to the connector 29 controlledy by 'the cover or screen 26. Beneath the lever 35v a cam 39 is secured on the4 rock shaft 21 so that a movement of this shaft caused by either the inward niovement of the board or the raising of the cover rocks the lever to release the switch blade and permit its automatic movementte cut off the power.

For the purpose of controllingthe power to va belt driven machine a shifting nieeliane ism is used to cooperate with the driving alleys. These pulleys may comprise the lbose ,pulleys ,40 and 41 adapted to receive belts (not showin-which are driven at dif-V -ferent speeds in the usual manner. These pulleys are mounted upon a slift42 supported in a bearing 43 carried by a bracket 44 for that purpose. Power is transmitted from this shaft in the usual manner to the parts of the machine to be operated. The pulleys 40 and 4.1 are mounted to freely `rotate upon the shaft while the pulley 45 them.

The latch mechanism comprises a base '55 secured to the bracket 44 in any desired Y manner and formed with a central tubular casing 56 in which the latch bolt 57 is 'mounted,' the upper end thereof being formed with a'curved .tooth 58 adapted' to seat in a notch or recess 59 formed in the shifting shaft 446 before described. This notch is also formed with an inclined face 60 to facilitate the engagement and disenga-gement of the bolt tooth therewith. The

` bolt is formed with a transverse slot or recess 61 Awithin which a cam 62 is disposed and carried by the rock shaft 63 extended therefrom and provided with an operating arm 64. It will be seen'that the oscillation of' this. cam will positively shift the bolt toward and from-the shaft 46. This shaft may be held under tension by any desired means in order to restore it to the vvnonoperative position of the machine as shown by full lines in Fig. 1. a tensionv device is shown and comprises a chain or cable 65 provided at its lower end with. a rod 66 upon which a weight 67 is disposed. This chain extends through the curved tube 68 and is connected to the guide bracket at 69.' This tension device is duplicated so as to provide movement in either directionand the tubes therefore have their 25 as shown in Figs. 1 land 2 the arm 64 i from the shaft 'of the cam is connected by a link 70 with one arm of'a bell crank lever 71 mounted u on a shaft 72 while the other armof the ever 71-is pivoted to the rod 25 at 73. When it is desired to operate the belt .guides by hand to start or stop the machine l an operating handle 74 is disposed upon the shaft 72 and a slotted lever 7 5i secured to I tial position.

One form of such.v

the shaft tofembrace' a pin 76 extended laterally from the shifting shaft'46.

-In the operation of the invention as ap- "plied in Figs. 1 and 2 the -belt guides are cated by dotted lines'in Fig. 1. Such movement raises one of the weights which exerts a tension to return the shifter to a nonoperativev position. This returnv movement is resisted by the latch' which engages the shifting shaft and retains the machine in operative position .at either speed desired. Under these conditions ifthe hand of the operator presses against .the guard board the rock shaft controlled thereby is shifted and .thelatch bolt operated through the connections described to permitthe weight to automaticallyv restore the belt guides to their ini- The same action is secured when the cover or screen is raised in order to secure access to the moving-parts of a machine.'

The starting and stopping of the machine and the application of the different speeds is controlled through the hand. lever while the latching bolt automatically seats in the sliding rod through thel tension of its connection so that whenever the parts are in driving position they are held under tension and ready to be releasedby any movement of the board or cover which would endanger the operator. It will therefore be seen that the lnvention presents a-simple and efficient construction by which a machine may be stopped by--a slight movement of the safety devices as the application of the tension means does not require any material pressure upon the'safety devices to automatically'release the tension to effect a shifting of the power.

Having described the'invention and set forth its merits what is 'claimed and desired to be secured by Letters Patent i's- 1. The combination with a power controlling` device having means under tension for automatically cutting off. power, of a rock shaft connected to release said tension means and provided with a leverarm, and a pivoted guard board having means disconnected from said arm4 and extended from one end thereof to contact with said arm in the movement of the board in one direction. y

2. The combination with a power controlnected from said arm to engage the latter ling. device having means under tension for in the movement of the 'board in' one direction.

3. The combination with a power controlling device having means under tension for automatically cutting` off power,'-oic a rock shaft connected to release said tension means and provided with a lever arm, and a pivoted guard board provided at one end oi" its free 'edge with an extended-rod disposedto engage said arm in the inward movement of said board.

Li. The combination witlia' power controlling devicehaving means` undcrtension for automatically cutting' ott power, of a rock shaft connected to' release said tension means, an arm from said rock shaft, and a swinging guard' board having means disconnected vtrom said arm to engage and, shift it in one movement of said board.

5. The combination with a powercontrollingl device having' means under tension for 'automatically cutting` ofi power, of a roel;-

sha ift connected to release said tension means, an arm from said rock shaft, a swinging guard board adapted to engage' `said arm, a pivoted` cover, andl a connection from the shaft thereof to said releasing means.

6. The combinatiouwith a power controllingA device having means under tension for automatically cutting ed power, of a rock sha it connected to release said tension means, anfarm from` said rock shaft, ay swinging- .guardfbcard adapted to engage said arm, a

pivoted cover liavintg a crank arm extended from the axis thei coi', and aA connection therefrom to operate the releasing means.

Tf. The combination with apower 4controlling/device having,- means under tension for automaticall;Y cutting off-power, of a swinging guard board, connections operated thereby. releasing aid means when under' tensioirand a cover member connected to opcrate said yconnections independently of said board. i Y

The con'ibinatioii with a power control.- lino` device having means `under tension tor autoni'aticallvcuttine oii Bower oi a savino'- J 7 t) ing,r guard board, connections operated thereby for releasing said means when under' ten sion, a pivoted cover, and a connection thei from to the releasingconnection.

9. The cbinbination with a' power Controlling device having means under tension for shaft connected to release saidtension means, a crank arm carried by said rock shaft, and a. swinging guardY board provided at its iree end with an extension to engage said crank arm. A'

l0. The combination with a power' controllingdevice having means under tension for automatically cutting ofi power, voit a rock shaftconnected to `release said tensionv means, a cranli arm carried by said rock shaft, a swinging guard board provided at vided with a plurality. of holdin@- devices,

its freie end with an extensionto ei'iga'ge said crank arm, and a weightcarried by the free end of said crank arm.

ll. ln' a stopping device, a movable guard member, driving belts, a belt shifter provided with 'a plurality ot holding means' belt pulleys, tension devices connected to saidshitter to move 'itin opposite directions, and mean-s controlled by the guard member for engaging the holdingl means upon the 7 shifter. 1 2. In a stopping` device, a movable guard member, drivingbelts, a beltfshi't'ter pro vided with a plurality of holdingmeans, belt pulleys, tension devices connected to said shifter to move it in opposite directions., and a latch mounted to engage either of said holdingF means and connected to said guard member for operation thereby.

13; In a stopping device, a movable guard e member, driving belts, a belt shifter pr'o vided with a plurality oi holding means, beltpulleys, tension devices connected to said shifter to move it in opposite directions,

a sliding latch mounted for movement to- 9 Ward and from the holding means'u'pon said shifter, and connections from the guard member to operate said latch.

lll. ln a stoppingdevice, a movable guar member, a driving belt, a belt shifter, belt o5 pulleys,- a. tension device'connected to saidA shifter, a sliding` latch mounted for movement. toward and .tronisaid shifter, a cam v mounted to artuate said latch, and a lever arm from said cam connected tosaid guard member.

15. In a stopping device, a movable guard member, a driving' belt, a belt shifter, beltv pulleys, atension' device connected to said shifter, a latch casing, a slotted slidinglatch i mounted therein for movement relative-to said shifter, a cam dispos Yd within the slot of' said latch, and ai lever arm from saidl cam connectedto said guard member; 'l

16. ln a sten aine device. a movable O'uard lie i n ze member, driving` belts, ay slidable shaft. provided with ya plurality 'of holding devices, a belt guide bracket thereon, pulieys coperat ing with said belts, means controlled b v said devices upon said shaft, and a tension device connected'to said shaftto restore it to initial n n position. vautomatically cutting1 oil power, oi a roclt` 17. n a stopping deviea inovabie guardv ,guard member for engaging* either of said-13.5

member, driving belts, slida'ble shaft pro-"daze vided with a plurality oit holding devices, a belt zoguide bracket thereon, pulleys coperating with saidbeits, means controlled by said guard member :tor engaging' either of said having denible connections extending to said shaft? 18. ln a stopping device, a movable guardVIA member, drivingbelts, a slidable Vsliaftfprodevices noon said shaft and restorinei Weiohts 125 L t3 b a belt guide bracket thereon, pulleys coperating With said belts, means controlled by said guard member for engaging either of said devices upon said' sha-ft restoring weights having flexible connections extending to said shaft, a d curved guide tubes through which said exible connection pass.

19. In a stopping evice,a movable guard member, a driving belt, a slidable shaft proy vided With retaining recesses therein, a belt guide carried by said shaft, pulleys coperating with said belt, retaining means adapted to enter the recesses of said shaft, a con- -nection from-the said means to the guardy member and means for automatically shifting said shaft lwhen released from the re(- taining means.

20. In a stopping device, a movable guard member, a driving belt, -a slidable shaft provided ivith retaining recesses therein, a belt guide carried by said shaft, pulleys coperating With said guide, retaining` inea'nadapted to enter the recesses of said shaft, a connection from the said means to the guard member, means forl automatically shifting said shaft when released from the retaining means, a rock shaft, a lever arm extended therefrom and connected to said sliding shaft, and an operating lever carried bysaid rock shaft.

2l. In a stopping device, a pivoted guard member, a rock shaft adapted to be actuated thereby, a driving shaft, parallel loose pulleys and an intermediate tight pulley thereon, driving belts for said pulleys, a sliding belt shifter mounted to coperate with said belts, independent tension devices connected to saidbelt shifter torestore it to non-driving position, and ajlateh mechanism operatively connected to said rock shaft and` adapted to retain the shifter in either driving position. i 's 22. In a stopping device, a pivoted guard i member, a rock shaft adapted to bevactuated thereby, a driving shaft, parallel loose pulleys and an intermediate tight pulley thereon, driving belts for said pulleys, a sliding belt shifter mounted to eoperate with said belts, ,independent tension devices connected to said belt shifter to restore itto non-driving-position, a latch mechanism having an operating lever, a crank leverconnected to said operating lever, and a connecting rod from the opposite arm of the belt crank lever to said rock shaft.

23. In a stoppingdevice, 'a pivoted guard member, a rock shaft adapted to be actuated thereby', a driving shaft parallel loose pulleys and an intermediate tight pulley thereon, vdriving belts for said pulleys, asliding shaftlprovided' with retaining recesses, a

and adapted to cooperate with the said re- 4 cesscs, independent restoring iveighta `and flexible connections extending in opposite directions therefrom and connected to said sliding shaft.

25. In a stopping device, a pivoted guard member, a rock shaft adapted to be actuated thereby, a driving shaft parallel loose pnlleys and an intermediate tight pulleyathereon, driving belts for said pulleys, a sliding shaft provided vwith retaining recesses, a plurality of belt guides secured tosaid shaft, a

latch bolt controllcd'by 'the guard member and adapted to coperateywith the said re-y eessesindependent tension devices for restoring said sliding shaft to initial position, a'pin extended from said sliding shaft, and

.a manually controlled shifting lever having a slotted end to embrace said pin.

Q6. In a stoppingl device, a movable guard member, a slidable shaft provided with a. plurality, of retaining recesses having inclined walls upon their adjacent sides, drivl ing belts, driving pulleys, belt guides carried by said shaft, a retaining bolt having a `curved face adapted to enter said recesses,y an'd a connection from said bolt to said guard member. y

27. The combination With a power 'conltrollingdevice having means under tension for automatically cutting ott' power, of a pivoted coverscreen having its axis operatively connected to release said tension means,

aguard board pivoted beneath the free edge of said screen, and connections from said guard board to release saidtension means.

In testimony -whereof We aliix our signatures in presence of tivo witnesses.

IVILLIAM BARTHOLOMEW.

DAVID J`. PHILLIPS. IVitnesses: WVM. KooGMAN,

C. I. BELKNAP. 

